Recom international sip3 single output dcdc converter r 78c 10 series recom r 78c90 10 the recom r 78c90 10 dcdc converter is a switching regulator that is ideal for replacing the 1a 78xx linear regulators and is pin compatible the r 78c90 10 is supplied with an input voltage of 12 42v and an output voltage of 90v it features a high efficiency level of up to 96 short circuit protection and thermal shutdown other features include a low profile and a wide voltage input range r